<!DOCTYPE html>

<html xmlns:th="http://www.thymeleaf.org">

<head>

<meta charset="UTF-8" />

<title>Insert title here</title>

</head>

<body>

            错误信息：<h4 th:text="${msg}"></h4>

       <form action="" method="post">

           <p>账号：<input type="text" name="username" value="admin"/></p>

           <p>密码：<input type="text" name="password" value="123456"/></p>

           <p><input type="submit" value="登录"/></p>

       </form>

</body>

</html>